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| Registros recuperados : 119 | |
| 80. |  | COSTA, R. S. C. da; LEONIDAS, F. das C.; RODRIGUES, V. G. S.; MENDES, A. M.; SANTOS, J. C. F. As principais plantas daninhas que ocorrem no cafezal em Machadinho do Oeste, Rondônia. In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 3., 2003, Porto Seguro. Resumos... Brasília, DF: Embrapa Café, 2003.| Biblioteca(s): Embrapa Café. |
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| Registros recuperados : 119 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
07/06/2022 |
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Data da última atualização: |
23/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
MARQUES, J. P.; VAZ, C. M. P.; SÍGOLO, J. B.; RODRIGUES, V. G. S. |
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Afiliação: |
CARLOS MANOEL PEDRO VAZ, CNPDIA. |
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Título: |
Soils of the Ribeira Valley (Brazil) as environmental protection barriers: Characterization and adsorption of lead and cadmium. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Sustainability, v. 14, n. 9, 5135, 2022. |
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Páginas: |
18 p. |
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DOI: |
10.3390/su14095135 |
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Idioma: |
Inglês |
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Conteúdo: |
In waste disposal areas, soils can be used as environmental protection barriers to retain potentially toxic metals. Although most studies focus on lateritic soils, it is still of interest to evaluate other soil types, aiming to select the best materials among those available near the contamination area, reducing costs and construction efforts. This paper characterizes and evaluates the behavior of 13 soil materials collected in a region (Ribeira Valley, Brazil) with a history of improper mining waste disposal for the retention of lead (Pb) and cadmium (Cd) and their possible use as environmental protection barriers. All soils were acidic, kaolinitic, with negatively charged particles. Soils were grouped into three classes according to soil properties, such as particle size distribution, cation exchange capacity (CEC), and specific surface area (SSA), using cluster and principal component analysis. The Pb and Cd adsorption capacities ranged from 288 to 479 µg g−1 and 207 to 326 µg g−1, respectively, obtained from batch equilibrium tests. In general, all soils presented suitablecharacteristics for the retention of Pb and Cd, but four of them (1 to 4) showed the highest adsorptioncapacities, probably due to their larger SSA, CEC and percentage of fines (clay + silt). |
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Palavras-Chave: |
Batch equilibrium tests; Contamination; Potentially toxic metals. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1143828/1/P-Soils-of-the-Ribeira-Valley-Brazil-as-Environmental-Protection.pdf
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Marc: |
LEADER 01975naa a2200217 a 4500
001 2143828
005 2024-01-23
008 2022 bl uuuu u00u1 u #d
024 7 $a10.3390/su14095135$2DOI
100 1 $aMARQUES, J. P.
245 $aSoils of the Ribeira Valley (Brazil) as environmental protection barriers$bCharacterization and adsorption of lead and cadmium.$h[electronic resource]
260 $c2022
300 $a18 p.
520 $aIn waste disposal areas, soils can be used as environmental protection barriers to retain potentially toxic metals. Although most studies focus on lateritic soils, it is still of interest to evaluate other soil types, aiming to select the best materials among those available near the contamination area, reducing costs and construction efforts. This paper characterizes and evaluates the behavior of 13 soil materials collected in a region (Ribeira Valley, Brazil) with a history of improper mining waste disposal for the retention of lead (Pb) and cadmium (Cd) and their possible use as environmental protection barriers. All soils were acidic, kaolinitic, with negatively charged particles. Soils were grouped into three classes according to soil properties, such as particle size distribution, cation exchange capacity (CEC), and specific surface area (SSA), using cluster and principal component analysis. The Pb and Cd adsorption capacities ranged from 288 to 479 µg g−1 and 207 to 326 µg g−1, respectively, obtained from batch equilibrium tests. In general, all soils presented suitablecharacteristics for the retention of Pb and Cd, but four of them (1 to 4) showed the highest adsorptioncapacities, probably due to their larger SSA, CEC and percentage of fines (clay + silt).
653 $aBatch equilibrium tests
653 $aContamination
653 $aPotentially toxic metals
700 1 $aVAZ, C. M. P.
700 1 $aSÍGOLO, J. B.
700 1 $aRODRIGUES, V. G. S.
773 $tSustainability$gv. 14, n. 9, 5135, 2022.
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Embrapa Instrumentação (CNPDIA) |
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